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Wildcard queries return poorly ranked results with bm25 & query independant factors applied as a weighted sum
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Description

Identified by Trey on en-wp-bm25-relforge.wmflabs.org, results are significantly worse.
Mainly because results are ranked by query independent factors rather than title vs content match.

Event Timeline

dcausse created this task.Aug 22 2016, 8:22 AM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptAug 22 2016, 8:22 AM
Restricted Application added projects: Discovery, Discovery-Search. · View Herald TranscriptAug 22 2016, 8:22 AM

Change 305666 had a related patch set uploaded (by DCausse):
Use top_terms_blended_freqs with FullTextSimpleMatchQueryBuilder

https://gerrit.wikimedia.org/r/305666

dcausse claimed this task.Aug 22 2016, 8:24 AM
dcausse moved this task from in progress to Needs review on the Discovery-Search (Current work) board.

Change 305666 merged by jenkins-bot:
Use top_terms_blended_freqs with FullTextSimpleMatchQueryBuilder

https://gerrit.wikimedia.org/r/305666

debt closed this task as Resolved.Sep 1 2016, 8:54 PM